Regulable tone-arm connecter



J. KORANEK REQULABLE TONE ARM CONNECTER Jan. 19,1926. 1,570,308

Filed Jan. 28 1924 v citizen of the United lator of sounds emanating Patented Jan. 19, 1926.

UNITED STATES:

PATENT OFFICE.

JOHN KORANEK, OF

CHICAGO, ILLINOIS, ASSIGNOR '10 E. TOMAN, & (10., OF CHICAGO,

ILLINOIS, A CORPORATION OF ILLINOIS..

REGULABLE TONE-ARM CONNEGTER.

Application filed January 28 1924. Serial). 689,198.

To all whom it may concern:

Be it known that I Jorm KORANEK, a States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Regulable Tone-Arm Connector; and I do hereby declare that the following is a full, clear, and exact description of the same, reference be-. ing had to the accompanying drawings, and to the numerals of reference marked thereon, which form a part of this specification.

This invention relates to a regulable tone arm connecter and particularly to a device which is adapted for connectin a talking machine tone arm and ampli er with a radio receiver unit.

It is an object of this invention to provide a. connecter for the purpose specified which may also be conveniently used as a modufrom the ampli- It is a further object of this invention to be economically manufactured and is easily adjustable.

Other and further important objects of' this invention will be. apparent from the dis closures in the specification and the accom-' panying drawings. The invention (in a preferred form) is shown on the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a top plan view of a talking machine equipped with the improved connecter of this invent-ion.

Figure 2 is a side elevation of the talking machine shown in Figure 1.

Figure 3 is a central horizontal section with parts in elevation taken throughthe connector and tone arm and showing the relative positions of the talking-machine reproducer and the radio receiver.

Figure 4 is a fragmentary sectional view taken at right angles to the sectional view illustrated in Figure 3 and with parts shown .in elevation.-

As shown on the drawings The reference numeral 1 indicates an ordmary talking machine cabinet which is provided with-a usual amplifier (not shown) extending to and connecting with a usual tone arm 2, which is swingingly mounted at the top of the cabinet. Said tone arm 2 is provided at its outer end; that is, the end extending outside the cabinet 1, with an open end T connection 3, one end of which.

has supported and connected therein a usual talking machine reproducer structure 4, a sleeve portion Extending into the T 3 from the other end thereof and rotatably mounted therein is a cyllndrical member 8, the outer end of which is open and provided with a flange 9 abutting the outer end of the arm of the T into which the cylindrical member projects, as clearly shown in Figures 3 and 4. Said flange 9, as will be'noted, projects beyond the outer surface of the T 3 and may be grasped by the fingers of an operator for manual rotation of the cylindrical member 8 for a purpose hereinafter to be described.

5 on said reproducer structure being rotatable in one end of the T so that Said cylindrical member 8 is grooved as indicated at. 10 and the groove therein is engaged by a setscrew 11 projecting through the T 3 so that said cylindrical member is prevented from longitudinal movement relative to the T 3 but is permitted to rotate therein. The length of the groove 10 may of course be varied, if desired, to limit the amount of rotation of the cylindrical memher, to any predetermined degree. The inner end of the cylindrical member 8 is closed by a diagonal bafile member 12 which is preferably integral with said cylindrical member and which extends across the T 3 at an angle of less than with the axis of said T and the cylindrical member 8.

Said baflle member 12 when in the position shown in full lines in Figure 3 acts to prevent the transmissionv of sounds into the tone arm from said cylindrical member 8 turned so that the bafii member 12 is in the dotted line position shown in Figure 3, said baflie member prevents the transmission of sounds from the reproducer unit 4 into the tone arm 2 but permits of the transmission of sounds from, the interior of the cylindrical member 8 into said tone arm 2 through an opening 13 which is cut in the wall of the cylindrical member adjacent the baflie member 12 as clearly shown in Figures 3 and 4.

The sounds which are ordinarily introduced into the cylindrical member 8 are those produced by a radio receiver loud speaker unit such as is indicated at 14, and which may comprise, if desired, a familiar type Baldwin receiver which is provided with a cylindrical connection 15 frictionally engaging the inside of the open end of the cylindrical member 8. The receiver unit 14 is of course supplied with sound producing energy through a suitable cable conductor 16.

It will be apparent that this invention provides an eflicient connecter whereby the tone arm 2 may be selectively connected either to the reproducer unit 4 or to the loud speaker receiver unit 14: to amplify sounds produced by either of said units.

It will be further apparent that the cylindrical member 8.may be rotated to provide modulation of sounds introduced into the tone arm, and said cylindrical member thus serves as an excellent sound regulator.

The device of this invention is simple, may be economically constructed and, as will be noted, readily applied to standard type talking machine tone arms.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention and I therefore do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention: I

1. Means for utilizing a phonograph selectively to respond to the vibrations of a reproducer or a radio receiver said means comprising the combination with a tone arm on said phonograph, of a T connection on said tone arm, a reproducer connected to one arm of said T connection, a radio receiver connected to the other arm of said T connection and a baflie memher rotatably mounted in the T connection for selectively connecting the tone arm with either the reproducer or the receiver.

2. Means for utilizing a phonograph selectively to respond to the vibrations of a reproducer or a radio receiver said means comprising the combination with a tone arm on said phonograph, of a T connection on said tone arm, a reproducer connected to one arm of said connection, a bafiie member rotatably mounted in the T connection for selectively connecting the tone arm with either the reproducer or the receiver and means operable from outside the T connection for operating said rotatable means.

3. Means for utilizing a phonograph selectively to respond'to the vibrations of a reproducer or a radio receiver said means comprising the combination with a tone arm on said phonograph, of a two arm connection thereon, a reproducer connected to one arm of said connection, a radio receiver connected to the other arm of said connection and means movably mounted in the two arm connection including a baflie member diagonally transversing the same for selectively connecting the receiver.

4. Means for utilizing a phonograph selcctivelyto respond. to the vibrations of a reproducer or a radio receiver said means comprising a connecter valve of the class described comprising a cylindricalmember open at one end and having an opening in the wall thereof adjacent the other end and having a closure for the last mentioned end of the cylindrical member making an angle of less than 90 with the axis of said cylin drical member.

5. Means for utilizing a phonograph selectively to respond to the vibrations of a reproducer or a radio receiver said means comprising the combination with a tone arm on said phonograph, of a plurality of open end connections on'said tone arm, a reproducer connected to one of said connections, a radio receiver connected to the other of said connections and means rotatably mounted between said connections for selectively connecting the tone arm with either the reproducer or receiver said means also acting when rotated to modulate tones trans- JOHN KORANEK. 

